# Math Help - Finding Determinant

1. ## Finding Determinant

Hello,

how do you find the determinant for

det(3A) given that det(A)=7

Thanks!

2. Originally Posted by l flipboi l
Hello,

how do you find the determinant for

det(3A) given that det(A)=7

Thanks!
You would have to know the size of $A$.

$\det (kA) = k^n \det (A)$

where $A$ is an $n \times n$ matrix and $k$ is a constant

3. Thanks! Just figured it out before too.